def test_encode_signed_fixed(value, value_bit_size, frac_places,
data_byte_size):
if value_bit_size > data_byte_size * 8:
pattern = r'Value byte size exceeds data size'
with pytest.raises(ValueError, match=pattern):
SignedFixedEncoder(
value_bit_size=value_bit_size,
frac_places=frac_places,
data_byte_size=data_byte_size,
)
return
encoder = SignedFixedEncoder(
value_bit_size=value_bit_size,
frac_places=frac_places,
data_byte_size=data_byte_size,
)
if not is_number(value):
pattern = r'Value of type .*NoneType.* cannot be encoded by SignedFixedEncoder'
with pytest.raises(EncodingTypeError, match=pattern):
encoder(value)
return
if SignedFixedEncoder.illegal_value_fn(value):
pattern = r'Value .*(NaN|Infinity|-Infinity).* cannot be encoded by SignedFixedEncoder'
with pytest.raises(IllegalValue, match=pattern):
encoder(value)
return
lower, upper = compute_signed_fixed_bounds(value_bit_size, frac_places)
if value < lower or value > upper:
pattern = r'Value .* cannot be encoded in .* bits'
with pytest.raises(ValueOutOfBounds, match=pattern):
encoder(value)
return
with decimal.localcontext(abi_decimal_context):
residue = value % (TEN**-frac_places)
if residue > 0:
pattern = re.escape(
'SignedFixedEncoder cannot encode value {}: '
'residue {} outside allowed fractional precision of {}'.format(
repr(value),
repr(residue),
frac_places,
))
with pytest.raises(IllegalValue, match=pattern):
encoder(value)
return
# Ensure no exception
encoder(value)
def test_encode_signed_fixed(value,
value_bit_size,
frac_places,
data_byte_size):
if value_bit_size > data_byte_size * 8:
pattern = r'Value byte size exceeds data size'
with pytest.raises(ValueError, match=pattern):
SignedFixedEncoder(
value_bit_size=value_bit_size,
frac_places=frac_places,
data_byte_size=data_byte_size,
)
return
encoder = SignedFixedEncoder(
value_bit_size=value_bit_size,
frac_places=frac_places,
data_byte_size=data_byte_size,
)
if not is_number(value):
pattern = r'Value `None` of type .*NoneType.* cannot be encoded by SignedFixedEncoder'
with pytest.raises(EncodingTypeError, match=pattern):
encoder(value)
return
if SignedFixedEncoder.illegal_value_fn(value):
pattern = r'Value .*(NaN|Infinity|-Infinity).* cannot be encoded by SignedFixedEncoder'
with pytest.raises(IllegalValue, match=pattern):
encoder(value)
return
lower, upper = compute_signed_fixed_bounds(value_bit_size, frac_places)
if value < lower or value > upper:
pattern = r'Value .* cannot be encoded by SignedFixedEncoder: Cannot be encoded in .* bits'
with pytest.raises(ValueOutOfBounds, match=pattern):
encoder(value)
return
with decimal.localcontext(abi_decimal_context):
residue = value % (TEN ** -frac_places)
if residue > 0:
pattern = r'Value .* cannot be encoded by SignedFixedEncoder: residue .* outside allowed'
with pytest.raises(IllegalValue, match=pattern):
encoder(value)
return
# Ensure no exception
encoder(value)
def bounds_fn(self, value_bit_size):
return compute_signed_fixed_bounds(self.value_bit_size, self.frac_places)
def bounds_fn(self, value_bit_size):
return compute_signed_fixed_bounds(self.value_bit_size, self.frac_places)